(a) attributive designating a system of handling cargo involving two connected derricks working in tandem; (b) this system of handling cargo.
| 单词 | θ206228 |
| 释义 | society > travel > travel by water > vessel, ship, or boat > equipment of vessel > tackle or purchase > [noun] > operation of two derricks in tandem (1) union purchase1925 (a) attributive designating a system of handling cargo involving two connected derricks working in tandem; (b) this system of handling cargo. |
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